Bunches of fresh herbs can have a short shelf life, so it's extra important to make sure you take the time to pick out the freshest of the lot. Look for herbs that seem like they've just been picked with plump leaves, firm stems, and vibrant colors. Above all, make sure to avoid bunches that have been sitting out for a while. You'll recognize them from their wilted (or sometimes even slightly slimy) leaves and stringy stems. Once again, your nose can help guide you to the freshest, most fragrant bunches.